CAP 413 Radiotelephony Manual
Explanatory Note Page 1
Explanatory Note
Twentieth Edition, Amendment 1: Summary
In addition to editorial changes and minor corrections, and a change throughout the document
from millibar to hectopascal as the unit of measurement of atmospheric pressure,
Amendment 1 comprises:
Section Chapter Paragraph Subject Origin
Glossary 1 1.1 Addition of definition for Backtrack,
and removal of Absolute Minima.
CAA
Radiotelephony 2 1.14.5 Readback requirement of altimeter
settings, including units when value is
below 1000 hectopascals.
CAA
Aerodrome
Phraseology
4 1.8.7 Expansion of examples for circuit
phraseology.
CAA
Aerodrome
Phraseology
4 1.9.6 Example phraseology for a low pass. CAA
Aerodrome
Phraseology
4 1.12 Correction to phraseology for
reduction in RFFS.
CAA
Aerodrome
Phraseology
4 2.3.2 Enhanced text for FISO phraseology
regarding use of runway designators.
CAA
Aerodrome
Phraseology
4 5.5.2 Passing of traffic information, and
logistics information by an offshore
aeronautical radio station.
CAA
Aerodrome
Phraseology
4 7.3 Removal of Absolute Minimum and
addition of ‘check your minima’.
CAA
Approach
Phraseology
6 1.4.1 Correction to example of pilot
readback of VFR clearance.
CAA
Approach
Phraseology
6 1.17.6 Addition of example for reducing a
service due to surveillance
performance.
MAA
Emergency
Phraseology
8 1.7 Addition of phraseology for use of
Ballistic Recovery System.
CAA
Phraseology
Examples
11 1.2.5 Correction to phraseology for
'descend on the glidepath'.
CAA
Appendix 1 2 & 3 Update of UK differences to ICAO.
Hectopascals and 'Negative I say
again’ now in use.
CAA
Bibliography 1 JSP 552 Military Air Traffic Service
Regulations renamed ATM 3000
Manual of Military Air Traffic
Management.
MAA
17 November 2011